Browsing Τμήμα Πληροφορικής / Department of Computer Science by Author "Nicolaïdes, Andrew N."

Article

Erratum: Juxtaluminal hypoechoic area in ultrasonic images of carotid plaques and hemispheric symptoms (Journal of Vascular Surgery (2010) 52 (69-76))

Griffin, Maura B.; Kyriacou, Efthyvoulos C.; Pattichis, Constantinos S.; Bond, Dawn; Kakkos, Stavros K.; Sabetai, Michael; Geroulakos, George; Georgiou, Niki; Doré, C. J.; Nicolaïdes, Andrew N. (2010)

Article

Evaluation of the risk of stroke with confidence predictions based on ultrasound carotid image analysis

Lambrou, Alexandra; Papadopoulos, Harris; Kyriacou, Efthyvoulos C.; Pattichis, Constantinos S.; Pattichis, Marios S.; Gammerman, A.; Nicolaïdes, Andrew N. (2012)

Conformal Predictors (CPs) are Machine Learning algorithms that can provide reliable confidence measures to their predictions. In this work, we make use of the Conformal Prediction framework for the assessment of stroke ...

Conference Object

First and second order statistical texture features in carotid plaque image analysis: Preliminary results from ongoing research

Kyriacou, Efthyvoulos C.; Nicolaïdes, Andrew N.; Pattichis, Constantinos S.; Petroudi, Styliani; Pattichis, Marios S.; Griffin, Maura B.; Kakkos, Stavros K.; Makris, Gregory C. (2011)

Carotid plaques have been associated with ipsilateral neurological symptoms. High-resolution ultrasound can provide information not only on the degree of carotid artery stenosis but also on the characteristics of the ...

Article

First and second order statistical texture features in carotid plaque image analysis: preliminary results from ongoing research.

Kyriacou, Efthyvoulos C.; Nicolaïdes, Andrew N.; Pattichis, Constantinos S.; Petroudi, Styliani; Pattichis, Marios S.; Griffin, Maura B.; Kakkos, Stavros K.; Makris, Gregory C. (2011)

Carotid plaques have been associated with ipsilateral neurological symptoms. High-resolution ultrasound can provide information not only on the degree of carotid artery stenosis but also on the characteristics of the ...

Article

An integrated system for assessing stroke risk

Kyriacou, Efthyvoulos C.; Pattichis, Constantinos S.; Karaolis, Minas A.; Loizou, Christos P.; Christodoulou, Christodoulos I.; Pattichis, Marios S.; Kakkos, Stavros K.; Nicolaïdes, Andrew N. (2007)

Conference Object

An integrated system for the assessment of ultrasonic imaging atherosclerotic carotid plaques

Pattichis, Constantinos S.; Christodoulou, Christodoulos I.; Pattichis, Marios S.; Pantzaris, Marios C.; Nicolaïdes, Andrew N. (2001)

The objective of this work is to develop a system that will facilitate the automated characterization of ultrasonic imaging carotid plaques for the identification of individuals with asymptomatic carotid stenosis at risk ...

Article

An integrated system for the segmentation of atherosclerotic carotid plaque

Loizou, Christos P.; Pattichis, Constantinos S.; Pantzaris, Marios C.; Nicolaïdes, Andrew N. (2007)

In this paper, we propose and evaluate an integrated system for the segmentation of atherosclerotic plaque in ultrasound imaging of the carotid artery based on normalization, speckle reduction filtering, and four different ...

Article

An integrated system for the segmentation of atherosclerotic carotid plaque ultrasound video

Loizou, Christos P.; Petroudi, Styliani; Pantzaris, Marios C.; Nicolaïdes, Andrew N.; Pattichis, Constantinos S. (2014)

The robust border identification of atherosclerotic carotid plaque, the corresponding degree of stenosis of the common carotid artery (CCA), and also the characteristics of the arterial wall, including plaque size, ...

Conference Object

An integrated teleconsultation system for the evaluation of the risk of stroke

Kyriacou, Efthyvoulos C.; Pattichis, Constantinos S.; Christodoulou, Chris C.; Karaolis, Minas A.; Nicolaïdes, Andrew N. (Plymouth University, 2005)

This paper describes the design and development of an integrated teleconsultation system for the estimation of the annual incidence of stroke related to carotid atherosclerotic plaque and the detection of high risk and low ...

Article

Juxtaluminal hypoechoic area in ultrasonic images of carotid plaques and hemispheric symptoms

Griffin, Maura B.; Kyriacou, Efthyvoulos C.; Pattichis, Constantinos S.; Bond, Dawn; Kakkos, Stavros K.; Sabetai, Michael; Geroulakos, George; Georgiou, Niki; Doré, C. J.; Nicolaïdes, Andrew N. (2010)

Objectives: The aim was to determine the diagnostic value of a juxtaluminal black (hypoechoic) area without a visible echogenic cap (JBA) in ultrasonic images of internal carotid artery plaques. Methods: Ultrasonic images ...

Article

Manual and automated media and intima thickness measurements of the common carotid artery

Loizou, Christos P.; Pattichis, Constantinos S.; Nicolaïdes, Andrew N.; Pantzaris, Marios C. (2009)

The intima-media thickness (IMT) of the common carotid artery (CCA) is widely used as an early indicator of the development of cardiovascular disease (CVD). It was proposed but not thoroughly investigated that the media ...

Conference Object

Measurement of motion of carotid bifurcation plaques

Nasrabadi, H.; Pattichis, Marios S.; Nicolaïdes, Andrew N.; Griffin, Maura B.; Makris, Gregory C.; Fisher, P.; Kyriacou, Efthyvoulos C.; Pattichis, Constantinos S. (2012)

Video loops of B-mode ultrasound images of 35 carotid bifurcation plaques were obtained (4 symptomatic and 31 asymptomatic) from patients with carotid bifurcation atherosclerosis. Video loops were classified visually as ...

Conference Object

Media thickness measurement of the common carotid artery

Loizou, Christos P.; Pattichis, Constantinos S.; Pantzaris, Marios C.; Nicolaïdes, Andrew N.; Georgiou, Niki; Kyriacou, Efthyvoulos C. (2007)

The intima-media thickness (IMT) of the common carotid artery (CCA) is widely used as an early indicator of the development of cardiovascular disease (CVD). It was proposed but not thoroughly investigated that the media ...

Article

Media thickness measurement of the common carotid artery.

Loizou, Christos P.; Pattichis, Constantinos S.; Pantzaris, Marios C.; Nicolaïdes, Andrew N.; Georgiou, Niki; Kyriacou, Efthyvoulos C. (2007)

The intima-media thickness (IMT) of the common carotid artery (CCA) is widely used as an early indicator of the development of cardiovascular disease (CVD). It was proposed but not thoroughly investigated that the media ...

Conference Object

Multi feature texture analysis for the classification of carotid plaques

Christodoulou, Christodoulos I.; Pattichis, Constantinos S.; Pantzaris, Marios C.; Tegos, Thomas J.; Nicolaïdes, Andrew N.; Elatrozy, Tarek S.; Sabetai, Michael; Dhanjil, S. (IEEE, 1999)

The objective of this work was to develop a computer aided system which will facilitate the automated characterization of carotid plaques recorded from high resolution ultrasound images for the identification of individuals ...

Conference Object

Multiscale morphological analysis of the atherosclerotic carotid plaque

Kyriacou, Efthyvoulos C.; Pattichis, Marios S.; Christodoulou, Christodoulos I.; Pattichis, Constantinos S.; Kakkos, Stavros K.; Nicolaïdes, Andrew N. (2005)

The aim of this paper was to investigate the usefulness of multiscale morphological analysis in the assessment of atherosclerotic carotid plagues. Ultrasound images were recorded from 137 asymptomatic and 137 symptomatic ...

Article

Prediction of high-risk asymptomatic carotid plaques based on ultrasonic image features

Kyriacou, Efthyvoulos C.; Petroudi, Styliani; Pattichis, Constantinos S.; Pattichis, Marios S.; Griffin, Maura B.; Kakkos, Stavros K.; Nicolaïdes, Andrew N. (2012)

Carotid plaques have been associated with ipsilateral neurological symptoms. High-resolution ultrasound can provide information not only on the degree of carotid artery stenosis but also on the characteristics of the ...

Conference Object

Prediction of the time period of stroke based on ultrasound image analysis of initially asymptomatic carotid plaques

Kyriacou, Efthyvoulos C.; Vogazianos, Paris; Christodoulou, Chris C.; Loizou, Christos P.; Panayides, Andreas S.; Petroudi, Styliani; Pattichis, Marios S.; Pantzaris, Marios C.; Nicolaïdes, Andrew N.; Pattichis, Constantinos S. (Institute of Electrical and Electronics Engineers Inc., 2015)

Non-invasive ultrasound imaging of carotid plaques can provide information on the characteristics of the arterial wall including the size, morphology and texture of the atherosclerotic plaques. Several studies were carried ...

Conference Object

Quality evaluation of ultrasound imaging in the carotid artery

Loizou, Christos P.; Pattichis, Constantinos S.; Istepanian, Robert Sh Habib; Pantzaris, Marios C.; Tyllis, Theodosis K.; Nicolaïdes, Andrew N. (2004)

Image quality assessment plays an important role in various image-processing applications. In this work we evaluate image quality criteria based on mean square error, signal to noise error, and quality and structural ...

Article

Quality evaluation of ultrasound imaging in the carotid artery based on normalization and speckle reduction filtering

Loizou, Christos P.; Pattichis, Constantinos S.; Pantzaris, Marios C.; Tyllis, Theodosis K.; Nicolaïdes, Andrew N. (2006)

Image quality is important when evaluating ultrasound images of the carotid for the assessment of the degree of atherosclerotic disease, or when transferring images through a telemedicine channel, and/or in other image ...